#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <set>
#include <queue>
}
}
if (Error)
- abort();
+ llvm_unreachable(0);
#endif
regUse_.clear();
regUseBackUp_.clear();
{
// linear scan algorithm
DOUT << "********** LINEAR SCAN **********\n";
- DOUT << "********** Function: " << mf_->getFunction()->getName() << '\n';
+ DEBUG(errs() << "********** Function: "
+ << mf_->getFunction()->getName() << '\n');
DEBUG(printIntervals("fixed", fixed_.begin(), fixed_.end()));
if (!isPhys && vrm_->getPreSplitReg(cur.reg))
continue;
- // A register defined by an implicit_def can be liveout the def BB and livein
- // to a use BB. Add it to the livein set of the use BB's.
- if (!isPhys && cur.empty()) {
- if (MachineInstr *DefMI = mri_->getVRegDef(cur.reg)) {
- assert(DefMI->getOpcode() == TargetInstrInfo::IMPLICIT_DEF);
- MachineBasicBlock *DefMBB = DefMI->getParent();
- SmallPtrSet<MachineBasicBlock*, 4> Seen;
- Seen.insert(DefMBB);
- for (MachineRegisterInfo::reg_iterator ri = mri_->reg_begin(cur.reg),
- re = mri_->reg_end(); ri != re; ++ri) {
- MachineInstr *UseMI = &*ri;
- MachineBasicBlock *UseMBB = UseMI->getParent();
- if (Seen.insert(UseMBB)) {
- assert(TargetRegisterInfo::isPhysicalRegister(Reg) &&
- "Adding a virtual register to livein set?");
- UseMBB->addLiveIn(Reg);
- }
- }
- }
- }
for (LiveInterval::Ranges::const_iterator I = cur.begin(), E = cur.end();
I != E; ++I) {
const LiveRange &LR = *I;
DowngradedRegs.clear();
assignRegOrStackSlotAtInterval(cur);
} else {
- cerr << "Ran out of registers during register allocation!\n";
- exit(1);
+ llvm_report_error("Ran out of registers during register allocation!");
}
return;
}
// mark our rollback point.
std::vector<LiveInterval*> added;
while (!spillIs.empty()) {
- bool epicFail = false;
LiveInterval *sli = spillIs.back();
spillIs.pop_back();
DOUT << "\t\t\tspilling(a): " << *sli << '\n';
addStackInterval(sli, ls_, li_, mri_, *vrm_);
std::copy(newIs.begin(), newIs.end(), std::back_inserter(added));
spilled.insert(sli->reg);
-
- if (epicFail) {
- //abort();
- }
}
unsigned earliestStart = earliestStartInterval->beginNumber();